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Two struts of a tent frame point along λ i + j + 3 k… | StemPy Lab
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Two struts of a tent frame point along λ i + j + 3 k and 2 i - 4 j + 2 k. The tent maker needs them at right angles to each other. Which value of λ does this need?
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Vectors and Three-Dimensional Geometry › Vector Algebra
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Two struts of a tent frame point along
λ
i
^
+
j
^
+
3
k
^
\lambda\hat i + \hat j + 3\hat k
λ
i
^
+
j
^
+
3
k
^
and
2
i
^
−
4
j
^
+
2
k
^
2\hat i - 4\hat j + 2\hat k
2
i
^
−
4
j
^
+
2
k
^
. The tent maker needs them at right angles to each other. Which value of
λ
\lambda
λ
does this need?
5
5
5
1
1
1
−
1
-1
−
1
−
5
-5
−
5
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← In a model of a roof, one rod runs along a = 2 i + 2 j + k and another along b = 3 j + 4 k. What is the angle between the rods, to the nearest tenth of a degree?
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